The chief says his department’s investigation has not revealed any particular motive for suicide. The investigation will remain open pending toxicology results.

Police say the 21-year-old Hilinski shot himself in the head with a .223-caliber rifle on Jan. 16 in his apartment. The sophomore quarterback was last seen alive that morning when he dropped a teammate off on campus for class.

Police say the rifle belonged to a teammate and that Hilinski took it without the teammate’s knowledge on or before Jan. 12.